Molarity Calculator I

Use this calculator to prepare your solutions from solid reagents.

Volume:	L
Molarity:	M
Molecular Weight:	gram/mol

Hit the submit button to calculate the weight of the reagent needed for the given volume to obtain desired molarity.

Molarity Calculator II

Use this calculator to adjust the concentration of a substance in a present solution to a higher concentration by adding a minimum volume of solution from a concentrated stock.

Concentration of present solution:	mM
Volume of present solution:	ml
Stock Concentration:	mM
Desired Final Concentration:	mM

Hit the submit button to calculate the volume of the stock solution needed to obtain desired molarity.